If you are a foreigner living in Ljubljana, you must know at least a few international clubs, associations, media, where people can meet and socialize.
There is International Club of Slovenia, ICS, that organises different events for expats like concerts, dance classes, pub quiz etc.
Not to forget the famous Friday Night Drinks (once a month, every time on different location in Ljubljana), next one is this Friday, 25 th January at Carpe Diem in Ljubljana!
There is also SILA, Slovenian International Ladies Associations organising monthly gatherings for ladies.
I also have to mention Radio Slovenia International and the Slovenia Times Magazine.
There is also the Cercle Illyrien, for French speaking community.
Good place to meet foreigners are also international schools. There are at least a few in Ljubljana: British International School, QSI International School, International School Danile Kumar, Ecole française.
You must know many more! Please share them with us!